andresol said:I have been charging the 12v battery regularly with an external charger to make sure that is not the source of the problem. The voltage of the 12v battery reads about 13.6v even after multiple days. The car is also rarely left with the charger in more than necessary. My guess is that there is a 12v error somewhere that triggers the warning lights, but I do not think it is connected to the actual battery. Since I've found corrosion inside actual electrical modules that use lower voltage, I'm afraid that this is a more widespread issue throughout the 12v system. However, I'm not sure, and really hope that is not the case. I can not afford having the car at the dealership having to pay for them to not solve the problem either...so I would rather test my luck here.
Any way to post up pictures of the corrosion that you found. I can visually almost see what you mean by the corrosion moving down the positive terminal but my memory is a little fuzzy from my own 2013 if anything looks worse than it should be, if that makes any sense... :?andresol said:Since I've found corrosion inside actual electrical modules that use lower voltage, I'm afraid that this is a more widespread issue throughout the 12v system. However, I'm not sure, and really hope that is not the case. I can not afford having the car at the dealership having to pay for them to not solve the problem either...so I would rather test my luck here.
GerryAZ said:If any of the various control modules (computers) have low supply voltage, they can cause CAN Bus communication errors and cause other modules to lock up. The DTC's you read and cleared with Leaf Spy and by disconnecting the 12V battery are typical for a weak 12V battery. Your 12V battery voltage sounds OK now, but you will need to solve all of the corroded/loose connection issues throughout the 12V system to completely resolve your issues. One connection to check that is not obvious is the body ground connection of the 12V negative cable. It looks like a clip just holding the cable in place on the fender by the battery, but is actually a ground connection. Remove the bolt and clean the threads in the body as well as the bolt and the terminal. Also check to make sure there is not corrosion inside the crimped connection to the stranded wire.
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